Home / 11,105.67-16,650.30-5,255.43

Finding the Fourth Proportional to 11,105.67, 16,650.30 and 5,255.43

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Solution

The fourth proportional to 11,105.67, 16,650.30 and 5,255.43 is: 7,879.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.67 : 16,650.30 = 5,255.43 : x
  2. Step 2: Convert to fraction form
    11,105.67/16,650.30 = 5,255.43/x
  3. Step 3: Cross multiply
    11,105.67x = 16,650.30 × 5,255.43
  4. Step 4: Simplify right side
    11,105.67x = 87,504,486.13
  5. Step 5: Solve for x
    x = 87,504,486.13/11,105.67
  6. Step 6: Final answer
    x = 7,879.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.